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Altered pineal serotonin binding in some suicides.

D L Sparks1, K Y Little

  • 1Department of Pathology, University of Kentucky Medical Center, Lexington.

Psychiatry Research
|April 1, 1990
PubMed
Summary
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Serotonin abnormalities are common in suicide victims. This study investigated serotonin binding in pineal glands, finding differences between suicide victims and controls, suggesting altered pineal function in suicide.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Biochemistry

Background:

  • Serotonergic system dysfunction is frequently observed in suicide.
  • Altered pineal gland function is noted in depression.
  • Serotonin-releasing nerve fibers innervate the pineal gland.

Purpose of the Study:

  • To investigate potential alterations in serotonin binding within the pineal gland of suicide victims.
  • To explore the relationship between pineal function and serotonin in the context of suicide.

Main Methods:

  • Assay of tritiated serotonin binding in pineal gland tissue.
  • Comparison of binding in pineal samples from suicide victims and control subjects.

Main Results:

  • High-affinity binding of serotonin was detected in the pineal gland.

Related Experiment Videos

  • Significant differences in serotonin binding were observed between some suicide victims and control individuals.

    • Conclusions:

    • The findings suggest that the pineal gland's serotonergic system may be altered in individuals who die by suicide.
    • These alterations in pineal function could be linked to the neurobiological underpinnings of suicide.